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2340bcd3 JVH |
1 | #include <stdlib.h> |
2 | #include <string.h> | |
3 | #include <assert.h> | |
4 | ||
5 | #include "http_request.h" | |
6 | #include "http_parser.h" | |
7 | ||
8 | struct http_request_s { | |
9 | http_parser parser; | |
10 | http_parser_settings parser_settings; | |
11 | ||
12 | const char *method; | |
13 | char *url; | |
14 | ||
15 | char **headers; | |
16 | int headers_size; | |
17 | int headers_index; | |
18 | ||
19 | char *data; | |
20 | int datalen; | |
21 | ||
22 | int complete; | |
23 | }; | |
24 | ||
25 | static int | |
26 | on_url(http_parser *parser, const char *at, size_t length) | |
27 | { | |
28 | http_request_t *request = parser->data; | |
29 | int urllen = request->url ? strlen(request->url) : 0; | |
30 | ||
31 | request->url = realloc(request->url, urllen+length+1); | |
32 | assert(request->url); | |
33 | ||
34 | request->url[urllen] = '\0'; | |
35 | strncat(request->url, at, length); | |
36 | return 0; | |
37 | } | |
38 | ||
39 | static int | |
40 | on_header_field(http_parser *parser, const char *at, size_t length) | |
41 | { | |
42 | http_request_t *request = parser->data; | |
43 | ||
44 | /* Check if our index is a value */ | |
45 | if (request->headers_index%2 == 1) { | |
46 | request->headers_index++; | |
47 | } | |
48 | ||
49 | /* Allocate space for new field-value pair */ | |
50 | if (request->headers_index == request->headers_size) { | |
51 | request->headers_size += 2; | |
52 | request->headers = realloc(request->headers, | |
53 | request->headers_size*sizeof(char*)); | |
54 | assert(request->headers); | |
55 | request->headers[request->headers_index] = NULL; | |
56 | request->headers[request->headers_index+1] = NULL; | |
57 | } | |
58 | ||
59 | /* Allocate space in the current header string */ | |
60 | if (request->headers[request->headers_index] == NULL) { | |
61 | request->headers[request->headers_index] = calloc(1, length+1); | |
62 | } else { | |
63 | request->headers[request->headers_index] = realloc( | |
64 | request->headers[request->headers_index], | |
65 | strlen(request->headers[request->headers_index])+length+1 | |
66 | ); | |
67 | } | |
68 | assert(request->headers[request->headers_index]); | |
69 | ||
70 | strncat(request->headers[request->headers_index], at, length); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static int | |
75 | on_header_value(http_parser *parser, const char *at, size_t length) | |
76 | { | |
77 | http_request_t *request = parser->data; | |
78 | ||
79 | /* Check if our index is a field */ | |
80 | if (request->headers_index%2 == 0) { | |
81 | request->headers_index++; | |
82 | } | |
83 | ||
84 | /* Allocate space in the current header string */ | |
85 | if (request->headers[request->headers_index] == NULL) { | |
86 | request->headers[request->headers_index] = calloc(1, length+1); | |
87 | } else { | |
88 | request->headers[request->headers_index] = realloc( | |
89 | request->headers[request->headers_index], | |
90 | strlen(request->headers[request->headers_index])+length+1 | |
91 | ); | |
92 | } | |
93 | assert(request->headers[request->headers_index]); | |
94 | ||
95 | strncat(request->headers[request->headers_index], at, length); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int | |
100 | on_body(http_parser *parser, const char *at, size_t length) | |
101 | { | |
102 | http_request_t *request = parser->data; | |
103 | ||
104 | request->data = realloc(request->data, request->datalen+length); | |
105 | assert(request->data); | |
106 | ||
107 | memcpy(request->data+request->datalen, at, length); | |
108 | request->datalen += length; | |
109 | return 0; | |
110 | } | |
111 | ||
112 | static int | |
113 | on_message_complete(http_parser *parser) | |
114 | { | |
115 | http_request_t *request = parser->data; | |
116 | ||
117 | request->method = http_method_str(request->parser.method); | |
118 | request->complete = 1; | |
119 | return 0; | |
120 | } | |
121 | ||
122 | http_request_t * | |
123 | http_request_init(int numerichost) | |
124 | { | |
125 | http_request_t *request; | |
126 | ||
127 | request = calloc(1, sizeof(http_request_t)); | |
128 | if (!request) { | |
129 | return NULL; | |
130 | } | |
131 | http_parser_init(&request->parser, HTTP_REQUEST, !!numerichost); | |
132 | request->parser.data = request; | |
133 | ||
134 | request->parser_settings.on_url = &on_url; | |
135 | request->parser_settings.on_header_field = &on_header_field; | |
136 | request->parser_settings.on_header_value = &on_header_value; | |
137 | request->parser_settings.on_body = &on_body; | |
138 | request->parser_settings.on_message_complete = &on_message_complete; | |
139 | ||
140 | return request; | |
141 | } | |
142 | ||
143 | void | |
144 | http_request_destroy(http_request_t *request) | |
145 | { | |
146 | int i; | |
147 | ||
148 | if (request) { | |
149 | free(request->url); | |
150 | for (i=0; i<request->headers_size; i++) { | |
151 | free(request->headers[i]); | |
152 | } | |
153 | free(request->headers); | |
154 | free(request->data); | |
155 | free(request); | |
156 | } | |
157 | } | |
158 | ||
159 | int | |
160 | http_request_add_data(http_request_t *request, const char *data, int datalen) | |
161 | { | |
162 | int ret; | |
163 | ||
164 | assert(request); | |
165 | ||
166 | ret = http_parser_execute(&request->parser, | |
167 | &request->parser_settings, | |
168 | data, datalen); | |
169 | return ret; | |
170 | } | |
171 | ||
172 | int | |
173 | http_request_is_complete(http_request_t *request) | |
174 | { | |
175 | assert(request); | |
176 | return request->complete; | |
177 | } | |
178 | ||
179 | int | |
180 | http_request_has_error(http_request_t *request) | |
181 | { | |
182 | assert(request); | |
183 | return (HTTP_PARSER_ERRNO(&request->parser) != HPE_OK); | |
184 | } | |
185 | ||
186 | const char * | |
187 | http_request_get_error_name(http_request_t *request) | |
188 | { | |
189 | assert(request); | |
190 | return http_errno_name(HTTP_PARSER_ERRNO(&request->parser)); | |
191 | } | |
192 | ||
193 | const char * | |
194 | http_request_get_error_description(http_request_t *request) | |
195 | { | |
196 | assert(request); | |
197 | return http_errno_description(HTTP_PARSER_ERRNO(&request->parser)); | |
198 | } | |
199 | ||
200 | const char * | |
201 | http_request_get_method(http_request_t *request) | |
202 | { | |
203 | assert(request); | |
204 | return request->method; | |
205 | } | |
206 | ||
207 | const char * | |
208 | http_request_get_url(http_request_t *request) | |
209 | { | |
210 | assert(request); | |
211 | return request->url; | |
212 | } | |
213 | ||
214 | const char * | |
215 | http_request_get_header(http_request_t *request, const char *name) | |
216 | { | |
217 | int i; | |
218 | ||
219 | assert(request); | |
220 | ||
221 | for (i=0; i<request->headers_size; i+=2) { | |
222 | if (!strcmp(request->headers[i], name)) { | |
223 | return request->headers[i+1]; | |
224 | } | |
225 | } | |
226 | return NULL; | |
227 | } | |
228 | ||
229 | const char * | |
230 | http_request_get_data(http_request_t *request, int *datalen) | |
231 | { | |
232 | assert(request); | |
233 | ||
234 | if (datalen) { | |
235 | *datalen = request->datalen; | |
236 | } | |
237 | return request->data; | |
238 | } |